Mbed OS Reference | OnboardNetworkStack.h Source File

 /* mbed OS IP stack API
  * Copyright (c) 2015-2017 ARM Limited
  * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 #ifndef MBED_IPSTACK_H
 #define MBED_IPSTACK_H
 
 #include "nsapi.h"
 
 #include "NetworkStack.h"
 #include "EMAC.h"
 #include "L3IP.h"
 #include "PPP.h"
 
 /**
  * mbed OS API for onboard IP stack abstraction
  *
  * This interface should be used by targets to initialize IP stack, create, bring up and bring down network interfaces.
  *
  * An onboard network stack has the potential ability to register interfaces
  * such as through EMAC, and has its own interface identifiers.
  */
 class OnboardNetworkStack : public NetworkStack {
 public:
     /** Return the default on-board network stack
      *
      * Returns the default on-board network stack, as configured by
      * JSON option nsapi.default-stack.
      */
     static OnboardNetworkStack &get_default_instance();
 
     /** Representation of a stack's view of an interface.
      *
      * Provides facilities required by a driver to implement the application
      * NetworkInterface API.
      */
     class Interface {
     protected:
         ~Interface() = default;
 
     public:
         /** Set IP address
          *
          * bringup() can only take one IP address and in dual stack case
          * another IP address can be set using this function.
          *
          * Must be called before bringup().
          *
          * @param    ip         IP address to be used for the interface as "W:X:Y:Z" or NULL
          * @param    netmask    Net mask to be used for the interface as "W:X:Y:Z" or NULL
          * @param    gw         Gateway address to be used for the interface as "W:X:Y:Z" or NULL
          * @param    ipv6_flag  Provide this flag for IPv6 state flag override. For example, you can set IP6_ADDR_PREFERRED.
          *                      For IPv4, this value will be ignored.
          * @return              NSAPI_ERROR_OK on success, or error code
          */
         virtual nsapi_error_t set_ip_address(const char *ip,
                                              const char *netmask,
                                              const char *gw,
                                              uint8_t ipv6_flag)
         {
             return NSAPI_ERROR_UNSUPPORTED;
         }
 
         /** Connect the interface to the network
          *
          * Sets up a connection on specified network interface, using DHCP or provided network details. If the @a dhcp is set to
          * true all the remaining parameters are ignored.
          *
          * @param    dhcp       true if the network details should be acquired using DHCP
          * @param    ip         IP address to be used for the interface as "W:X:Y:Z" or NULL
          * @param    netmask    Net mask to be used for the interface as "W:X:Y:Z" or NULL
          * @param    gw         Gateway address to be used for the interface as "W:X:Y:Z" or NULL
          * @param    stack      Allow manual selection of IPv4 and/or IPv6.
          * @param    blocking   Specify whether bringup blocks for connection completion.
          * @return              NSAPI_ERROR_OK on success, or error code
          */
         virtual nsapi_error_t bringup(bool dhcp, const char *ip,
                                       const char *netmask, const char *gw,
                                       nsapi_ip_stack_t stack = DEFAULT_STACK,
                                       bool blocking = true) = 0;
 
         /** Disconnect interface from the network
          *
          * After this call the network interface is inactive, to use it again user needs to call @n bringup again.
          *
          * @return    NSAPI_ERROR_OK on success, or error code
          */
         virtual nsapi_error_t bringdown() = 0;
 
         /** Register callback for status reporting
          *
          *  The specified status callback function will be called on status changes
          *  on the network. The parameters on the callback are the event type and
          *  event-type dependent reason parameter.
          *
          *  @param status_cb The callback for status changes
          */
         virtual void attach(mbed::Callback<void(nsapi_event_t, intptr_t)> status_cb) = 0;
 
         /** Get the connection status
          *
          *  @return         The connection status according to ConnectionStatusType
          */
 
         virtual nsapi_connection_status_t get_connection_status() const = 0;
 
         /** Returns interface name
         *
         * @return  string containing name of network interface for example "en0"
         */
 
         virtual char *get_interface_name(char *buf)
         {
             return NULL;
         };
         /** Return MAC address of the network interface
          *
          * @return              MAC address as "V:W:X:Y:Z"
          */
 
         virtual char *get_mac_address(char *buf, nsapi_size_t buflen) = 0;
 
         /** @copydoc NetworkStack::get_ip_address */
         virtual nsapi_error_t get_ip_address(SocketAddress *address) = 0;
 
         /** @copydoc NetworkStack::get_ipv6_link_local_address */
         virtual nsapi_error_t get_ipv6_link_local_address(SocketAddress *address)
         {
             return NSAPI_ERROR_UNSUPPORTED;
         }
 
         /** @copydoc NetworkStack::get_netmask */
         virtual nsapi_error_t get_netmask(SocketAddress *address) = 0;
 
         /** @copydoc NetworkStack::get_gateway */
         virtual nsapi_error_t get_gateway(SocketAddress *address) = 0;
     };
 
     /** Register a network interface with the IP stack
      *
      * Connects EMAC layer with the IP stack and initializes all the required infrastructure.
      * This function should be called only once for each available interface. EMAC memory
      * manager is available to EMAC after this function call.
      *
      * @param      emac             EMAC HAL implementation for this network interface
      * @param      default_if       true if the interface should be treated as the default one
      * @param[out] interface_out    pointer to stack interface object controlling the EMAC
      * @return                      NSAPI_ERROR_OK on success, or error code
      */
     virtual nsapi_error_t add_ethernet_interface(EMAC &emac, bool default_if, Interface **interface_out) = 0;
 
     virtual nsapi_error_t add_l3ip_interface(L3IP &l3ip, bool default_if, Interface **interface_out)
     {
         return NSAPI_ERROR_OK;
     };
 
     virtual nsapi_error_t add_ppp_interface(PPP &ppp, bool default_if, Interface **interface_out)
     {
         return NSAPI_ERROR_UNSUPPORTED;
     };
 
     virtual nsapi_error_t remove_ethernet_interface(Interface **interface_out)
     {
         return NSAPI_ERROR_OK;
     };
 
     virtual nsapi_error_t remove_l3ip_interface(Interface **interface_out)
     {
         return NSAPI_ERROR_OK;
     };
 
     virtual nsapi_error_t remove_ppp_interface(Interface **interface_out)
     {
         return NSAPI_ERROR_UNSUPPORTED;
     };
 
     virtual void set_default_interface(OnboardNetworkStack::Interface *interface)
     {
     }
 
     OnboardNetworkStack *onboardNetworkStack() final
     {
         return this;
     }
 };
 
 #endif /* MBED_IPSTACK_H */
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